I am evaluating two PLCs and I want to create an HMI for them possibly with XOJO. Modbus communications would be the way to go for me on this, and I have been scouring the past threads on the subject both here, and through Google, but in the end it seems that there is not a clear application example I can use.
in the end I want to do the following:
- click a radio button to perform an action in the PLC,
- enter information in a text box that will update a variable in the PLC
- using modbusTCP to show that the HMI is running, and if it is not, shut down the PLC process… If I can get 1 and 2 working, then this step is a breeze.
So, my question to the community is therean application or module drop in XOJO for ModbusTCP?
Looking forward to teh feedback!